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During the early 1900s, when safety razors were becoming increasingly popular, some manufacturers encouraged users to dispose of used blades by inserting them into the walls of their homes. This practice was considered a convenient and safe method of disposal at the time. People would often find a small slot or opening in the bathroom wall, usually near the shaving area, where they could conveniently drop their used blades.
The idea behind this disposal method was that the blades would be safely contained within the walls, preventing any accidental injuries to occupants or waste workers. It was believed that the walls would act as a barrier, concealing the blades and keeping them out of harm’s way.
